Turbulent flow over large-amplitude wavy surfaces-Reference-Cited by-同舟云学术

Turbulent flow over large-amplitude wavy surfaces

Published:1984-03 Issue: Volume:140 Page:27-44
ISSN:0022-1120
Container-title:Journal of Fluid Mechanics
language:en
Short-container-title:J. Fluid Mech.

Author:

Buckles Jeffrey,Hanratty Thomas J.,Adrian Ronald J.

Abstract

The laser-Doppler velocimeter is used to measure the mean and the fluctuating velocity for turbulent flow over a solid sinusoidal wave surface having a wavelength λ of 50.8 mm and a wave amplitude of 5.08 mm. For this flow, a large separated region exists, extending from x/λ = 0.14 to 0.69. From the mean velocity measurements, the time-averaged streamlines and therefore the extent of the separated region are calculated. Three flow elements are identified: the separated region, an attached boundary layer, and a free shear layer formed by the detachment of the boundary layer from the wave surface. The characteristics of these flow elements are discussed in terms of the properties of the mean and fluctuating velocity fields.

Publisher

Cambridge University Press (CUP)

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Reference25 articles.

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2. Eaton, J. K. & Johnston, J. P. 1981 AIAA J. 19,1093–1100.

3. Zilker, D. P. 1976 Flow over wavy surfaces. Ph.D. Thesis,University of Illinois,Urbana.

4. George, W. K. 1974 In Proc. 2nd Intl Workshop on Laser Velocimetry, Purdue University, 27–29 March ,pp.511–516.Purdue University Engineering Experiment Station.

5. Simpson, R. L. , Strickland, J. H. & Barr, P. W. 1977 J. Fluid Mech. 79,553–594.

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